{"id":2109,"date":"2022-08-30T15:22:07","date_gmt":"2022-08-30T15:22:07","guid":{"rendered":"https:\/\/unknownerror.org\/index.php\/2014\/01\/02\/dovecot-mailserver-authentication-server-didnt-send-valid-spid-as-expected-collection-of-common-programming-errors\/"},"modified":"2022-08-30T15:22:07","modified_gmt":"2022-08-30T15:22:07","slug":"dovecot-mailserver-authentication-server-didnt-send-valid-spid-as-expected-collection-of-common-programming-errors","status":"publish","type":"post","link":"https:\/\/unknownerror.org\/index.php\/2022\/08\/30\/dovecot-mailserver-authentication-server-didnt-send-valid-spid-as-expected-collection-of-common-programming-errors\/","title":{"rendered":"dovecot mailserver: Authentication server didn&#39;t send valid SPID as expected-Collection of common programming errors"},"content":{"rendered":"<p>I have set up my mail server and been using thunderbird to check my mails (followed the instructions here). Everything has been working well, except after I moved a few days ago, I can no longer check my mails using thunderbird. I check the logs on the server side and I see this error messages:<\/p>\n<pre><code>Apr  2 09:01:44 hostname dovecot: imap: Error: Authentication server didn't send valid SPID as expected: MECH^IPL\nAIN^Iplaintext\nApr  2 09:01:44 hostname dovecot: imap: Error: Disconnected from auth server, aborting (client-pid=16739 client-i\nd=1)\nApr  2 09:01:44 hostname dovecot: auth: Error: BUG: Authentication client sent unknown handshake command: REQUEST\n?1089470465?16739?1?7a504e346ca8ecf52b8708ea8a3e5dd2\nApr  2 09:01:45 hostname dovecot: auth: Error: BUG: Authentication client sent unknown handshake command: REQUEST\n?3807248385?16744?1?a3c7ad0ff58878582049c9db2ed88609\n<\/code><\/pre>\n<p>I suspected it might be due to change of my IP address. But I dont think I specify the range of IP that could access the server in dovecot. I only set that for Postfix and that has been fixed, yet the issue still stays.<\/p>\n<p>Got any ideas? Thanks.<\/p>\n<p id=\"rop\"><small>Originally posted 2014-01-02 12:05:49. <\/small><\/p>","protected":false},"excerpt":{"rendered":"<p>I have set up my mail server and been using thunderbird to check my mails (followed the instructions here). Everything has been working well, except after I moved a few days ago, I can no longer check my mails using thunderbird. I check the logs on the server side and I see this error messages: [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2109","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/2109","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/comments?post=2109"}],"version-history":[{"count":0,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/2109\/revisions"}],"wp:attachment":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/media?parent=2109"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/categories?post=2109"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/tags?post=2109"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}